BurstDR Spinal Cord Stimulation Versus Sham in Established Responders

Inclusion Criteria Participants must meet all of the following: 1. Be 18 years of age or older. 2. Have an implanted spinal cord stimulation system that can deliver BurstDR stimulation. 3. Have had a good and stable response to BurstDR therapy, defined as at least a 50% reduction in pain compared with pain before implantation or before starting BurstDR therapy, maintained for at least 3 months on stable stimulation settings. 4. Have had no major change in pain medication for at least 4 weeks before entering the study. 5. Be able to understand the study information and provide written informed consent. 6. Be willing and able to complete the study's electronic diaries and follow the study procedures. Exclusion Criteria Participants cannot take part if any of the following apply: 1. An active infection, wound problem, or other significant problem at the site of the implanted spinal cord stimulation system. 2. A known or suspected problem with the implanted stimulation system that could affect treatment delivery or safety. 3. A serious uncontrolled mental health condition, significant problems with memory or thinking, or another condition that could make it difficult to understand the study, provide informed consent, follow the study procedures, or provide reliable study information. 4. Planned surgery, planned changes to spinal cord stimulation programming outside the study, or an expected change in pain medication during the study period. 5. Pregnancy or breastfeeding. 6. Inability to use the electronic diary system when no practical alternative or assistance can be provided. 7. Any other medical or personal condition that, in the investigator's judgment, would make participation unsafe or inappropriate.